Craig Rhosyfelin - Pont Saeson rock outcrop, one of the likely sources of Stonehenge rhyolite one of the bluestone type.
The marks on the side of the large
"orthostat" -- I don't see anything
there which looks man-made. There are 2 very faint
vertical scratches or grooves, more or less
parallel -- are these the things you are looking
I'm intrigued by the edge of the big stone
projecting into the pit on the left. What is the
evidence that the pit was used for a standing
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